You can't. According to the data of Xiaohongshu, Dioscorea cirrhosa silk is a summer dress, which has good air permeability, but poor warmth retention, and is not suitable for wearing in winter with low temperature. Dioscorea cirrhosa silk is a kind of fabric, which is extracted from the rhizome of Dioscorea cirrhosa and made into dye, and then dyed black to prevent the fabric from being eaten by insects.